Heliodon elisabethanna Reemer

Reemer, Menno & Stahls, Gunilla, 2013, Generic revision and species classification of the Microdontinae (Diptera, Syrphidae), ZooKeys 288, pp. 1-213 : 97-98

Heliodon elisabethanna Reemer sp. n. Figs 88-90

Type specimens.

HOLOTYPE. Adult female. THAILAND. Label 1: "THAILAND / 2007"; label 2: "Voucher code M. Reemer / 316 / DNA voucher labcode MZH:Y1062". Coll. QSBG. No further locality data available.

Diagnosis.

No other species of Heliodon has entirely black legs.

Description (based on holotype).

Adult female. Body size: 12 mm.

Head. Face occupying about 1/3 of head width in frontal view; black; entirely golden pilose. Gena black; golden pilose. Lateral oral margins produced. Frons black; black pilose, except golden pilose posterolaterally. Vertex black; black pilose, except golden pilose along anterior margin and white pilose along posterior margin. Occiput black; black pilose on dorsal 1/3, white pilose on ventral 2/3. Eye pale pilose, with pile approximately as long as half the diameter of frontal ocellus. Antennal fossa about as high as wide. Antenna brown; antennal ratio approximately as 3:1:2.5.

Thorax. Mesoscutum black; black pilose, with inconspicuous pale pile along anterior margin and along lateral 1/3 of transverse suture. Postpronotum brownish; pale pilose. Postalar callus black on anterior 3/4, brown on posterior 1/4; black pilose dorsally, pale pilose laterally. Scutellum semicircular; with pair of distinct apical calcars with mutual distance about 1/3 of width of scutellum at base; black; black pilose anteriorly and dorsally, long golden pilose posteriorly. Pleurae black. Anepisternum black pilose, except white pilose on ventral 1/3 and narrowly along anterior margin; with very small bare patch ventrally on anterior part; with deep sulcus separating anterior from posterior part. Anepimeron black pilose on dorsal 1/3, white pilose on ventral 2/3. Katepisternum white pilose dorsally, bare ventrally. Katatergum long microtrichose, anatergum short microtrichose. Calypter greyish. Halter white.

Wing: Hyaline, except vaguely infuscated around apical crossveins, around spur on vein R4+5, around base of R2+3 and crossvein r-m; microtrichose, except bare on cell bc, basal 1/2 of cell c, basally on cell r1 along vein Rs, entirely bare on cell br except microtrichose along vena spuria, on basal 1/2 of cell r4+5, basal 1/2 of cell bm, basal 1/3 of cell cup, basomedian 2/3 of alula.

Legs: Black, except front femur brown anteriorly; white pilose, except golden pilose basoventrally on front and mid femora and apicoventrally on front and mid tibiae, and golden pilose ventrally on tarsi. Coxae and trochanters black; white pilose.

Abdomen. Tergites black, except for large yellow maculae posterolaterally on tergite 2, and narrow, medially interrupted yellow fasciae along posterior margins of tergites 3 and 4. Tergite 1 inconspicuously pale pilose. Tergite 2 with thick, conspicuous, appressed golden pile (tomentum), except narrowly black pilose along anterior margin. Tergite 3 with medially interrupted fascia of golden tomentum on posterior 2/5, inconspicuous golden pile on lateral 1/3 and inconspicuous black pile anteriorly. Tergite 4 with medially interrupted fascia of golden tomentum on posterior 1/2, inconspicuous golden pile on lateral 1/4 and inconspicuous black pile anteriorly. Tergite 5 medially with pair of large, medially connected patches of golden tomentum, mixed black and golden pilose otherwise. Sternites brownish; sternites 1-3 yellowish pilose; sternites 4 and 5 black pilose.

Female. Unknown.

Etymology.

This species is named after my partner Elisabeth (Liesbeth) Anna. The epithet is a noun in apposition.